PO.IPR.HW.DrainArea.Ellipse
Description
Calculates horizontal well drainage area using ellipse geometry (Joshi), [acres].
Syntax
=PO.IPR.HW.DrainArea.Ellipse(L, b)Parameters
| Parameter | Description |
|---|---|
| L | Length of the horizontal part of the well, [ft]. |
| b | Half minor axis of an ellipse, [ft]. |
SI Unit Version
Lambda Name
PO.IPR.HW.DrainArea.Ellipse.SIFormula
=LAMBDA(L, b, LET(
L_ft, PO.UnitConverter(L, "m", "ft"),
b_ft, PO.UnitConverter(b, "m", "ft"),
result_acre, PO.IPR.HW.DrainArea.Ellipse(L_ft, b_ft),
PO.UnitConverter(result_acre, "acre", "m2")))SI Parameters
| Parameter | Unit | Description |
|---|---|---|
L |
m | Length of the horizontal part of the well, [m] |
b |
m | Half minor axis of an ellipse, [m] |
How to save as a reusable Excel function
LAMBDA is a built-in Excel feature (Microsoft 365) that lets you create custom functions without VBA. The formula above works as-is when pasted into a cell.
To save a LAMBDA as a reusable named function:
- Go to Formulas → Name Manager → New
- Enter a name, e.g.
PO.IPR.HW.DrainArea.Ellipse.SI - In Refers to, paste the LAMBDA formula without the trailing invocation
(...) - Click OK
Now use =PO.IPR.HW.DrainArea.Ellipse.SI(...) anywhere in your workbook.